19004197800 has 192 divisors, whose sum is σ = 67431934080. Its totient is φ = 4337187840.

The previous prime is 19004197777. The next prime is 19004197801. The reversal of 19004197800 is 879140091.

It is a happy number.

It is a super-2 number, since 2×19004197800² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19004197801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3075514 + ... + 3081686.

It is an arithmetic number, because the mean of its divisors is an integer number (351207990).

Almost surely, 2^19004197800 is an apocalyptic number.

19004197800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19004197800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33715967040).

19004197800 is an abundant number, since it is smaller than the sum of its proper divisors (48427736280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19004197800 is a wasteful number, since it uses less digits than its factorization.

19004197800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6932 (or 6923 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 39.

The spelling of 19004197800 in words is "nineteen billion, four million, one hundred ninety-seven thousand, eight hundred".